WO2000002099A1 - Horloge electronique analogique - Google Patents

Horloge electronique analogique Download PDF

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Publication number
WO2000002099A1
WO2000002099A1 PCT/JP1999/003599 JP9903599W WO0002099A1 WO 2000002099 A1 WO2000002099 A1 WO 2000002099A1 JP 9903599 W JP9903599 W JP 9903599W WO 0002099 A1 WO0002099 A1 WO 0002099A1
Authority
WO
WIPO (PCT)
Prior art keywords
hand
gear
shaft
axis
minute hand
Prior art date
Application number
PCT/JP1999/003599
Other languages
English (en)
Japanese (ja)
Inventor
Kazuo Suzuki
Takayasu Machida
Takanori Nanya
Shigeyuki Takahashi
Takeaki Shimanouchi
Original Assignee
Citizen Watch Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Citizen Watch Co., Ltd. filed Critical Citizen Watch Co., Ltd.
Priority to JP2000558435A priority Critical patent/JP3423691B2/ja
Priority to US09/720,737 priority patent/US6434086B1/en
Priority to EP99926918A priority patent/EP1096342B1/fr
Priority to DE69911419T priority patent/DE69911419T2/de
Publication of WO2000002099A1 publication Critical patent/WO2000002099A1/fr

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/02—Back-gearing arrangements between gear train and hands
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/008—Mounting, assembling of components

Definitions

  • the present invention relates to an analog electronic timepiece that displays time using hands, and more particularly to a technique for reducing power consumption. Background technology
  • Clocks are not only for providing accurate time information, but also as decorative items.
  • the appearance design occupies an important position in almost all watches.
  • Most current watches such as wristwatches, are electronic watches that use a crystal oscillator, but there are two types: a digital type that displays the time with numbers, and an analog type that displays the time with a dial and hands.
  • the analog electronic watch has the following two functions that must be fulfilled simultaneously.
  • FIG. 19 is an exploded view showing the configuration of a train wheel in the drive section of a conventional analog two-hand electronic timepiece, in which concentric coaxial gears are also shown.
  • the rotation of the rotor 1a of the step motor is transmitted to the fifth gear 3 through the rotor pinion 2 and transmitted to the fourth gear 5 through the fifth pinion 4 that rotates together with the fifth gear 3. Further, the rotation of the fourth gear 5 was transmitted to the third gear 7 through the fourth pinion 6, transmitted to the second gear 9 through the third pinion 8, and attached to the second gear 9 via the second shaft. Turn minute hand 1 5.
  • the rotation of the second gear 9 is transmitted to the minute wheel 12 via the second pinion 10, transmitted to the hour wheel 14 via the second minute pin 13, and the hour hand attached to the hour wheel 14.
  • the rotation is transmitted to 17. That is, the rotor 1 to the hour hand 17 are Thus, the rotation operation is transmitted bidirectionally.
  • a step motor has been used to simultaneously realize the two functions of the analog timepiece described above.
  • the step motor can rotate at a constant angle.
  • the step motor has holding energy, so that the pointer can be held at the original position up to a certain level of disturbance energy generated by an external impact.
  • the necessary holding energy is first set in accordance with the guidelines to be used, and the driving conditions of the step motor are set based on that.
  • the power consumption when the step motor is rotated is largely determined by the driving conditions set in this way.
  • the driving conditions are optimized, and there is a possibility that the stepping operation may be performed with smaller driving energy if only the driving operation is performed.
  • the set value of the holding energy is reduced, the pointer cannot be held if the disturbance energy exceeds the set holding energy.
  • the needle jump phenomenon is prevented by setting a holding energy larger than a disturbance energy generated in a needle part due to an external impact.
  • the magnitude of the disturbance energy is related to the magnitude of the inertia in consideration of the imbalance caused by the degree of the moment imbalance of the pointer.
  • the shape is almost set, so the disturbance energy is greatly affected by the size of the inertia, and the design is prioritized, and the needle shape is enlarged or deformed to imbalance. If the property is increased, it easily exceeds the holding energy. As a result, the needle jump phenomenon occurs, and the two functions of the analog watch described above cannot be realized. For these reasons, if the design is prioritized, it is necessary to set the holding energy large, which inevitably increases the power consumption of the step motor. Disclosure of the invention
  • the present invention has been made in view of the above background, and in an analog electronic timepiece, the restriction on the design of the hands from the functional aspect of the hands has been removed, and the hands of the hands can be freely changed regardless of the size of the hands.
  • the purpose is to make the designed guidelines available and to reduce power consumption.
  • the present invention comprises an hour hand and a minute hand for displaying time, a step motor for rotating the hour hand and the minute hand, and a wheel train for reducing the rotation of the step motor and transmitting the rotation to the hour hand and the minute hand.
  • An analog electronic timepiece (two-hand electronic timepiece) is constructed as follows to achieve the above object.
  • the center of gravity of the rotating body of No. 2 shaft composed of No. 2 gear, No. 2 pin and No. 2 shaft to which the minute hand is attached It is configured to be shifted in the angle range of less than ⁇ 90 ° around the opposite direction to reduce the moment about the No. 2 axis that combines the above minute hand and the No. 2 axis rotating body.
  • An analog electronic timepiece (three-hand electronic timepiece) composed of a wheel train is also configured as follows in order to achieve the above object.
  • the finger portion of the second hand extends from the axis of the fourth shaft to the center of gravity of the fourth shaft rotating body composed of the fourth gear, the fourth pinion, and the fourth shaft to which the second hand is attached. It is configured to be shifted in the angle range of less than ⁇ 90 ° around the direction opposite to the direction, so as to reduce the moment about the 4th axis that combines the second hand and the 4th axis rotating body.
  • the following means should be used to shift the center of gravity of the 2nd axis rotating body. Can be.
  • An additional member is fixed to a half of the upper or lower surface of the second gear, opposite to the direction in which the finger portion of the minute hand extends with respect to the second shaft.
  • a hollow portion is formed in the half of the second gear on the same side as the direction in which the finger portion of the minute hand extends with respect to the second shaft.
  • the thickness of the above-mentioned No. 2 gear is made thicker in the opposite half than in the direction in which the finger portion of the minute hand extends with respect to the above No. 2 shaft.
  • the following means can be adopted as means for shifting the center of gravity of the fourth shaft rotating body.
  • the additional member is fixed to the upper or lower surface of the # 4 gear, in the half opposite to the direction in which the finger portion of the second hand extends with respect to the # 4 axis.
  • a hollow portion is formed in a half portion of the fourth gear on the same side as the direction in which the finger portion of the second hand extends with respect to the fourth shaft.
  • the thickness of the fourth gear is made thicker in the opposite half than the same direction as the direction in which the finger portion of the second hand extends with respect to the fourth shaft.
  • FIG. 1 is a sectional view of a drive section of an analog two-hand electronic timepiece according to a first embodiment of the present invention.
  • FIG. 2 is a front view showing the structure of the second shaft rotating body.
  • FIG. 3 and FIG. 4 are a bottom view and a sectional view of the second gear to which the additional member is similarly fixed.
  • FIG. 5 and FIG. 6 are a front view and a bottom view of the stepped No. 2 gear.
  • FIG. 7 is a front view of the wedge-shaped second gear.
  • FIG. 8 and FIG. 9 are a bottom view and a cross-sectional view of the second gear having a hollow portion.
  • FIG. 10 shows a drive unit of an analog three-hand electronic timepiece according to a second embodiment of the present invention.
  • FIG. 11 is a front view showing the structure of the fourth shaft rotating body.
  • FIGS. 12 and 13 are a bottom view and a cross-sectional view of the fourth gear to which the additional member is similarly fixed.
  • FIG. 14 and FIG. 15 are a front view and a bottom view of the stepped fourth gear.
  • FIG. 16 is a front view of a wedge-shaped No. 4 gear.
  • FIG. 17 and FIG. 18 are a bottom view and a cross-sectional view of the fourth gear having a hollow portion.
  • FIG. 19 is an exploded view showing a configuration of a wheel train in a drive unit of a conventional analog two-hand electronic timepiece.
  • FIG. 1 is a sectional view of the drive unit of the analog two-hand electronic timepiece.
  • the basic drive force transmission mechanism is the same as that of the conventional wheel train structure shown in FIG. Parts corresponding to those in the figure are denoted by the same reference numerals.
  • reference numeral 1 denotes a step motor, which is composed of a rotor 1a, a stator 1b, and a coil 1c.
  • the rotor 1a rotates intermittently at 180 ° per second.
  • the rotation of the rotor la is transmitted to the fifth gear 3 engaged with the first pinion 2, and rotates the fourth gear 5 through the fifth pinion 4 which rotates integrally with the fifth gear 3.
  • the rotation of the fourth gear 5 is transmitted to the third gear 7 through the fourth pinion 6 that rotates integrally therewith, and further transmitted to the second gear 9 that engages with the third pinion 8, and the second gear Fix gear 9 Five
  • the minute hand 15 attached to the tip is rotated together with the second shaft 11 which is the rotating shaft worn.
  • the rotation of the second gear 9 is transmitted to the minute wheel 12 engaging with the second pinion 10, transmitted to the hour wheel 14 through the minute pinion 13, and The rotation is transmitted to the hour hand 17 attached to the tip.
  • These wheel train structures are invisible from the hands because of the opaque dial 18.
  • 31 is a main plate and 32 is a train wheel receiving plate.
  • the direction in which the finger portion 15a (longitudinal portion extending leftward in FIG. 1) of the minute hand 15 extends on the lower surface of the second gear 9 with respect to the second shaft 11
  • a semicircular additional member 20 serving as a weight is attached to a half part on the opposite side to the above.
  • FIG. 2 is a diagram showing a configuration of a second shaft rotating body according to this embodiment, in which a second gear 9 is fitted and fixed to a second shaft 11 that integrates a second pinion 10,
  • the shaft rotating body 21 is constituted.
  • a minute hand 15 is attached to the end of the second shaft 11 of the second shaft rotating body 2 1, and a finger portion 1 of the minute hand 15 is provided on the lower surface of the second gear 9 with respect to the second shaft 11.
  • a semicircular additional member 20 is fixed to a half part on the side opposite to the direction in which 5a extends.
  • FIG. 3 is a bottom view of the second gear 9
  • FIG. 4 is a cross-sectional view of the second gear 9, showing the shape and mounting state of the additional member 20 with respect to the second gear 9.
  • a semicircular additional member 20 is fixedly attached to the right half in FIGS. 3 and 4 of the lower surface except the shaft hole 9 b into which the tooth portion 9 a of the second gear 9 and the second shaft 11 1 fit. I have.
  • the straight line 16 with an arrow shown in Fig. 3 is the center line of the minute hand viewed from above in Fig. 2 (the line connecting the tip of the finger portion 15a of the minute hand 15 and the rotation center), and the arrow A is the minute hand.
  • the direction in which the finger portion 15a of 15 extends is shown. Then, the symmetry axis of the additional member 20 is made to coincide with the minute hand center line 16.
  • the direction of shifting the center of gravity of the 2nd axis rotating body 21 is as shown in Fig. 3 when the axis of the 2nd axis 11a perpendicular to the paper surface (see also Fig. 2).
  • the angle range shall be less than ⁇ 90 ° around the direction opposite to the direction of arrow A where part 15a extends (the direction indicated by 180 ° opposite arrow B).
  • the center of gravity of the 2nd axis rotating body 21 is shifted within this range, the combined moment of the 2nd axis rotating body 21 and the minute hand 15 will be reduced, and the finger portion 15a of the minute hand 15 will be extended.
  • the moment reduction effect is the greatest when it is displaced by 180 ° in the direction (direction of arrow B) with respect to the direction (direction of arrow A).
  • the additional member 20 is a semicircular plate member as shown in FIG. 3, and its radius is set to be equal to or less than the radius of the root circle of the second gear 9 so as to contact the third pinion 8 shown in FIG. I try not to.
  • the radius of the additional member 20 may be large. Desirably, the effect is greatest when it is equal to the radius of the root circle of the second gear 9.
  • the radius of the additional member 20 was 1.19 mm. Further, by using a material having a high density, for example, tungsten or tantalum, the size of the additional member 20 can be reduced. In the test example, tungsten was used for the additional member 27, and its thickness was set to 200 ⁇ m. Needless to say, the greater the space, the greater the effect.
  • the combined moment of the rotating body of No. 2 shaft and the minute hand is M
  • the equivalent inertia moment of the minute hand from the minute hand to the step motor rotor via the wheel train is I
  • the watch performs a translational movement by receiving an external impact.
  • v is the speed of the motor
  • E p is the holding energy of the step motor.
  • the minute hand equivalent inertia moment described here corresponds to the pointer equivalent inertia moment described in the above document. In this embodiment, this name is used because attention is focused on the minute hand.
  • the above minute hand is used together with a step motor having a holding energy of 330 nJ, and by reducing the combined moment M of the 2nd axis rotating body and the minute hand as described above, from the outside of the watch. Since the energy required to rotate the minute hand generated when an impact is applied is reduced, it is possible to prevent hand jumps even if a stepping motor with a small holding energy of 150 nJ is used. . As described above, it is clear that by reducing the holding energy of the step motor, the driving energy for overcoming it and rotating the pointer can be reduced, and the power consumption of the step motor is reduced.
  • the combination of the 2nd axis rotating body 21 and the minute hand 15 since the absolute value of the motor one instrument has been estimated that 4 is 0 X 1 0- 9 [kg ⁇ m] or less, 2. 2 X 1 0- 9 [ kg * m] that moment is sufficiently Satisfies the condition.
  • the watch When a hammer impact tester gives a hammer impact of 30 cm to the conventional timepiece and the timepiece of this embodiment, the watch has the same configuration except that there is no additional member 20. However, no needle jump occurred in the clock of this embodiment in which the additional member 20 was attached.
  • the moment of inertia of the 2nd axis rotating body 21 is somewhat increased, but when viewed from the rotor 1a of the step motor 1, a 1/90 reduction gear train exists between the rotors.
  • the effect of the increase in the moment of inertia of the 2nd axis rotating body 21 viewed from 1a is reduced to 1/100. Therefore, the drive energy of the step motor hardly increases.
  • the additional member 20 shown in FIG. 3 has a semicircular shape, a fan-shaped additional member having a central angle of less than 180 degrees is attached so as to be symmetrical with respect to the center line 16 of the minute hand. Is also good.
  • the following means may be implemented as means for shifting the center of gravity of the second shaft rotating body 21. For example, change the thickness of No. 2 gear along the minute hand center line 16 The half on the opposite side is thicker than the half on the direction in which 15a extends.
  • FIGS. 5 and 6 realizes this by using a stepped second gear 22, and this stepped second gear 22 is separated by a diameter line orthogonal to the center line 16 of the minute hand.
  • the thickness of the half 22a on the opposite arrow B direction is made larger than the thickness of the half 22a on the arrow A side where the finger portion 15a of the minute hand 15 extends.
  • Reference numeral 22c in FIG. 6 denotes a shaft hole into which the second shaft 11 is fitted.
  • Fig. 7 The example shown in Fig. 7 is an example in which a wedge-shaped second gear 23, which is wedge-shaped in the thickness direction, is used as the second gear.
  • the thickness increases steplessly in the direction of arrow B.
  • the second gear is also effective to form the second gear using materials having different densities (mass) along the center line 16 of the minute hand.
  • the density of the material of the second gear is different from the diameter line perpendicular to the center line 16 of the minute hand, and the density of the half on the arrow B side is higher than that on the arrow A side.
  • the vicinity of the tooth portion 24 a and the shaft hole 24 b is left in the half of the minute hand 15 on the arrow A side where the finger portion 15 a extends.
  • a second gear 24 having a cutout 24c may be used.
  • a thin portion may be formed by cutting partway in the thickness direction.
  • FIG. 10 is a sectional view of a drive section of the analog three-hand electronic timepiece, and the same parts as those in FIG. 1 are denoted by the same reference numerals.
  • the rotation of the No. 4 shaft 25 is transmitted to the No. 3 gear 7 through the No. 4 pinion 6, and further transmitted to the No. 2 gear 9 which engages with the No. 3 pinion 8, and the No. 2 gear 9 is fixed.
  • the minute hand 15 attached to the tip is rotated together with the second axis 11 which is the rotation axis.
  • the rotation of the second gear 9 is transmitted to the minute wheel 12 engaging with the second pinion 10, transmitted to the hour wheel 14 through the minute pinion 13, and
  • the rotation is transmitted to the hour hand 17 attached to the tip.
  • a finger portion 19 a of the second hand 19 extends from the lower surface of the fourth gear 5 with respect to the fourth shaft 25.
  • a semicircular additional member 27 serving as a weight is attached to the half of the opposite side (the side where the tail 19b of the second hand 19 extends).
  • FIG. 11 is a diagram showing a configuration of a fourth shaft rotating body in this embodiment, in which a fourth gear 5 is fitted and fixed to a fourth shaft 25 integrating a fourth pinion 6,
  • the shaft rotation body 26 is constituted.
  • the second hand 19 is attached to the tip of the fourth shaft 25 of the fourth shaft rotating body 26, and the finger portion 1 of the second hand 19 for the fourth shaft 25 on the lower surface of the fourth gear 5 9 Form corrected with arrow C extending a (Rule 91)
  • a semicircular additional member 27 is fixed to a half portion opposite to the direction shown.
  • FIG. 12 is a bottom view of the fourth gear 5 and FIG. 13 is a cross-sectional view of the fourth gear 5, showing the shape and attachment state of the additional member 27 to the fourth gear 5.
  • a semicircular additional member 27 is fixed to the right half of Figs. 12 and 13 on the lower surface except the shaft hole 5b into which the tooth portion 5a of the fourth gear 5 and the fourth shaft 25 are fitted. are doing.
  • the straight line 28 with an arrow shown in FIG. 12 is the center line of the second hand (the line connecting the tip of the finger portion 19 a of the second hand 19 and the center of rotation) viewed from above in FIG. Indicates the direction in which the finger portion 19 a of the second hand 19 extends.
  • the axis of symmetry of the additional member 27 is made to coincide with the center line 28 of the second hand.
  • the center of gravity of the fourth shaft rotating body 26 shown in FIG. Move (offset) the axis from the axis 25 a of the second axis 25 to a certain range in the direction opposite to the direction C in which the finger portion 19 a of the second hand 19 extends.
  • the moment about the fourth shaft 25 obtained by combining the second hand 19 and the fourth shaft rotating body 26 is reduced.
  • the direction of shifting the center of gravity of the 4th axis rotating body 26 is as shown in Fig. 12, the axis of the 4th axis 25a perpendicular to the paper (see also Fig. 11).
  • the direction of the finger part 19a extends in the direction opposite to the direction of arrow C (the direction indicated by the arrow D opposite to 180 °), and the angle should be within ⁇ 90 °.
  • the additional member 27 is a semi-circular plate member as shown in FIG. 12 and the radius thereof is set to be equal to or less than the radius of the root circle of the fourth gear 5 and the fifth pinion 4 shown in FIG.
  • the purpose is to reduce the combined moment of the 4th axis rotating body 26 and the second hand 19, so if the finger portion 19a of the second hand 19 is heavy, the radius of the additional member 27 may be large. Desirably, the effect is greatest when it is equal to the radius of the root circle of the fourth gear 5.
  • the radius of the additional member 27 was set to 1.17 mm.
  • a material having a high density for example, tungsten or tantalum, the size of the additional member 27 can be reduced.
  • tungsten was adopted for the additional member 27, and its thickness was set to 100. Needless to say, the greater the space, the greater the effect.
  • M is the combined moment of the 4th axis rotating body and the second hand
  • I is the second hand equivalent moment of inertia from the second hand to the step motor rotor via the wheel train
  • the speed at which the watch performs a translational movement by receiving an external impact Is v and the holding energy of the step motor is Ep.
  • the second hand equivalent inertia moment described here corresponds to the pointer equivalent inertia moment described in the above document. In this embodiment, this name is used because the second hand is focused on.
  • the second hand is used together with a step motor having a holding energy of 334 nJ.
  • a step motor having a holding energy of 334 nJ.
  • the fourth shaft rotating body 26 and the second hand 1 since the absolute value of the synthesized model one placement of 9 2. 4 X 1 0- 9 [kg ⁇ m] or less der Rukoto is estimated, 0. 7 X 1 0- 9 that [kg 'm] The moment fully satisfies the condition.
  • a fan-shaped additional member with a central angle of less than 180 degrees is attached symmetrically with respect to the center line 28 of the second hand. You can do it.
  • the thickness of the fourth gear is changed along the center line 28 of the second hand so that the half on the opposite side is thicker than the half on the side where the finger portion 19 a of the second hand 19 extends. I do.
  • the example shown in FIGS. 14 and 15 realizes this by using a stepped fourth gear 35.
  • the fourth stepped gear 35 has a diameter line orthogonal to the center line 28 of the minute hand.
  • the finger part 19 a of the second hand 19 extends, and the thickness of the half part 35 on the opposite arrow D direction is made larger than the thickness of the half part 35 a on the direction C side of the arrow C.
  • Reference numeral 35c in FIG. 15 denotes a shaft hole into which the fourth shaft 25 is fitted.
  • the thickness of the thin half 35 a of the 4th gear 3 with a step 35 shown in FIG. 14 is 100 / zm, and the thickness of the thick half is 2
  • the thickness was set to 00 ⁇ m and the material was made of brass.
  • the correction moment by the fourth gear 35 with the step one 1 1 X 1 0 - becomes 9 [kg ⁇ m]
  • 1 6 X 1 0 - was reduced to 9 [kg ⁇ m]..
  • Fig. 16 is an example in which a wedge-shaped fourth gear 36, which is wedge-shaped in the thickness direction, is used as the fourth gear, and this wedge-shaped fourth gear 36 is located at the center line 28 of the second hand. Along the thickness Only increases continuously in the direction of arrow C.
  • the thickest part of the wedge-shaped No. 4 gear 36 shown in Fig. 16 was 200 ⁇ m, the thinnest part was 100 / m, and it was made of brass (brass). .
  • the correction moment by the wedge-shaped fourth gear 3 6 - 0. 3 X 1 0- 9 becomes [kg ⁇ m], mode one instrument of the second hand 1 9 2. 7 X 1 0- 9 [kg ⁇ If it is m], synthesized moment fourth shaft rotor and the second hand 1 9 since the sum of both, 2. decreased to 4 X 1 0- 9 [kg ⁇ m].
  • the fourth gear is also effective to form the fourth gear with materials having different densities (mass) along the center line 28 of the second hand.
  • the density of the material of the fourth gear is different from the diameter line perpendicular to the center line 28 of the second hand, and the density of the half on the arrow D side is higher than that on the arrow C side.
  • the finger portion 19 a of the second hand 19 extends, and the half of the second hand 19 in the direction of arrow C is located near the tooth portion 37 a and the shaft hole 37 b.
  • a fourth gear 37 having a hollow portion 37c may be used.
  • a thin portion may be formed by cutting halfway in the thickness direction.
  • the radius of the hollow portion 37c was set to 970 ⁇ m to leave 200 ⁇ m even at the thinnest part.
  • the thickness of the fourth gear 37 is ⁇ ⁇ ⁇ , and the material is true.
  • a two-stage reduction gear train is configured from the rotor la of the stepping motor 1 to the fourth gear 5, but a gear train in which the rotor and the fourth gear are directly engaged, Even if there are two or more reduction gear trains up to the 4th gear, low power consumption can be achieved by using the aforementioned 4th shaft rotating body.
  • the analog electronic timepiece according to the present invention with respect to the minute hand or the second hand having a large moment, sets the center of gravity of the second shaft rotating body including the second gear or the fourth shaft rotating body including the fourth gear, By offsetting from the axis of No. 2 or No. 4 axis, it is possible to reduce the moment about the rotating axis that combines these rotating bodies and minute hand or second hand. It will work.
  • the power consumption of the step motor can be reduced, and the power consumption of the electronic timepiece can be reduced.
  • the design of the minute hand and the second hand so that the minute hand and the second hand can be used freely, and diversification of analog electronic clocks becomes possible.

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  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

L'invention concerne une horloge électronique analogique capable de ralentir la rotation du rotor (1a) d'un moteur pas-à-pas (1) au moyen d'un module de transmission avant qu'elle ne soit transmise à une aiguille d'heure (17) et à une aiguille de minute (15). Le centre de gravité d'un second corps d'entraînement d'arbre comprend un engrenage central (9), un pignon central (10) et un second arbre (11) sur lequel est installée l'aiguille de minute (15). Ce centre de gravité est déplacé, suivant un angle compris dans une marge inférieure à environ 90°, à partir de l'axe du second arbre (11), dans la direction opposée à celle dans laquelle s'étend une partie de signalisation du temps (15a) de l'aiguille de minute (15). Il est ainsi possible de réduire le moment du second arbre (11), provoqué par l'aiguille de minute (15) et le second corps d'entraînement d'arbre et ainsi de prévenir une rupture de l'aiguille due à un dérangement et ce, même si la valeur de l'énergie de maintien du moteur pas-à-pas (1) est réduite.
PCT/JP1999/003599 1998-07-03 1999-07-02 Horloge electronique analogique WO2000002099A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2000558435A JP3423691B2 (ja) 1998-07-03 1999-07-02 アナログ式電子時計
US09/720,737 US6434086B1 (en) 1998-07-03 1999-07-02 Analog electronic timepiece
EP99926918A EP1096342B1 (fr) 1998-07-03 1999-07-02 Horloge electronique analogique
DE69911419T DE69911419T2 (de) 1998-07-03 1999-07-02 Elektronische analoguhr

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP10/188414 1998-07-03
JP18841498 1998-07-03
JP10/188413 1998-07-03
JP18841398 1998-07-03

Publications (1)

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WO2000002099A1 true WO2000002099A1 (fr) 2000-01-13

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US (1) US6434086B1 (fr)
EP (1) EP1096342B1 (fr)
JP (1) JP3423691B2 (fr)
CN (1) CN1307695A (fr)
DE (1) DE69911419T2 (fr)
WO (1) WO2000002099A1 (fr)

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DE602006011129D1 (de) * 2006-05-18 2010-01-28 Microcomponents Ag Analoge Anzeige und Uhr für Kraftfahrzeuge
CN101728926B (zh) * 2008-10-14 2011-08-17 彭希南 一种双驱动轴的微型步进电机
EP2309342A1 (fr) * 2009-10-07 2011-04-13 Nivarox-FAR S.A. Mobile monté fou en matériau micro-usinable et son procédé de fabrication
CN101937188B (zh) * 2010-07-08 2012-12-12 常州精科实业有限公司 具有缓冲装置的电子钟
CH710362A1 (fr) * 2014-11-13 2016-05-13 Société Anonyme De La Mft D'horlogerie Audemars Piguet & Cie Dispositif de rattrapante à train épicycloïdale pour pièce d'horlogerie.
EP3489767A1 (fr) * 2017-11-27 2019-05-29 Montres Breguet S.A. Dispositif de centrage magnetique d'un arbre dans un mouvement horloger

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DE69911419D1 (de) 2003-10-23
DE69911419T2 (de) 2004-06-24
JP3423691B2 (ja) 2003-07-07
US6434086B1 (en) 2002-08-13
EP1096342A1 (fr) 2001-05-02
CN1307695A (zh) 2001-08-08
EP1096342A4 (fr) 2001-08-08
EP1096342B1 (fr) 2003-09-17

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